<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
 <head>
  <meta http-equiv="content-type" content="text/html; charset=UTF-8">
  <title>建立一个临时文件</title>
<link media="all" rel="stylesheet" type="text/css" href="styles/03e73060321a0a848018724a6c83de7f-theme-base.css" />
<link media="all" rel="stylesheet" type="text/css" href="styles/03e73060321a0a848018724a6c83de7f-theme-medium.css" />

 </head>
 <body class="docs"><div class="navbar navbar-fixed-top">
  <div class="navbar-inner clearfix">
    <ul class="nav" style="width: 100%">
      <li style="float: left;"><a href="function.tempnam.html">« tempnam</a></li>
      <li style="float: right;"><a href="function.touch.html">touch »</a></li>
    </ul>
  </div>
</div>
<div id="breadcrumbs" class="clearfix">
  <ul class="breadcrumbs-container">
    <li><a href="index.html">PHP Manual</a></li>
    <li><a href="ref.filesystem.html">文件系统函数</a></li>
    <li>建立一个临时文件</li>
  </ul>
</div>
<div id="layout">
  <div id="layout-content"><div id="function.tmpfile" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">tmpfile</h1>
  <p class="verinfo">(PHP 4, PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">tmpfile</span> &mdash; <span class="dc-title">建立一个临时文件</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-function.tmpfile-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>tmpfile</strong></span>(): <span class="type"><span class="type">resource</span>|<span class="type"><span class="type false">false</span></span></span></div>

  <p class="para rdfs-comment">
   以读写（w+）模式创建一个具有唯一文件名的临时文件，然后返回该文件的句柄。
  </p>
  <p class="para">
   文件在关闭后（例如，调用 <span class="function"><a href="function.fclose.html" class="function">fclose()</a></span> 或 <span class="function"><strong>tmpfile()</strong></span>
   返回的文件句柄已无引用的情况）或脚本运行结束后，会自动删除。
  </p>
  <div class="caution"><strong class="caution">警告</strong>
   <p class="simpara">
    如果脚本运行被意外终止，可能不会删除该临时文件。
   </p>
  </div>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.tmpfile-parameters">
  <h3 class="title">参数</h3>
  <p class="para">此函数没有参数。</p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.tmpfile-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   返回新文件的句柄，类似于 <span class="function"><a href="function.fopen.html" class="function">fopen()</a></span> 返回的文件句柄， 或者在失败时返回 <strong><code>false</code></strong>。
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.tmpfile-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-2230">
    <p><strong>示例 #1 <span class="function"><strong>tmpfile()</strong></span> 例子</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$temp&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">tmpfile</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">fwrite</span><span style="color: #007700">(</span><span style="color: #0000BB">$temp</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"writing&nbsp;to&nbsp;tempfile"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">fseek</span><span style="color: #007700">(</span><span style="color: #0000BB">$temp</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">);<br />echo&nbsp;</span><span style="color: #0000BB">fread</span><span style="color: #007700">(</span><span style="color: #0000BB">$temp</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">1024</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">fclose</span><span style="color: #007700">(</span><span style="color: #0000BB">$temp</span><span style="color: #007700">);&nbsp;</span><span style="color: #FF8000">//&nbsp;this&nbsp;removes&nbsp;the&nbsp;file<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
writing to tempfile
</pre></div>
    </div>
   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.tmpfile-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.tempnam.html" class="function" rel="rdfs-seeAlso">tempnam()</a> - 建立一个具有唯一文件名的文件</span></li>
    <li class="member"><span class="function"><a href="function.sys-get-temp-dir.html" class="function" rel="rdfs-seeAlso">sys_get_temp_dir()</a> - 返回用于临时文件的目录</span></li>
   </ul>
  </p>
 </div>


</div></div></div></body></html>